Acacia polystachya A.Cunn. ex Benth.
Bentham, G. (1842) The London Journal of Botany 1: 376. Type: Port Bowen, Cunningham, Port Essington, Armstrong; Haggerstons Island, E. Coast (in fruit), Cunningham.
Dead bark rough and hard to cut.
Leaves green, phyllodineous. Leaf blades about 0.9-17 x 1.6-2.3 cm. A pink or red gland normally visible on the upper side of the leaf blade-petiole junction. Veins longitudinal, anastomosing, usually 2-4 more prominent than the rest, usually running together near the base. Leaf bearing twigs more or less triangular in cross section.
Spikes +/- white, sparse, about 5-8 cm long, on peduncles about 5 mm long. Calyx rather membranous, broad, about 0.7-0.9 mm long, glabrous, lobes fimbriate, about 0.25 mm long. Corolla deeply lobed, glabrous, about 1.5-2 mm long, about 2-2.5 times as long as the calyx. Stamens about 3-4 mm long. Ovary densely pubescent.
Cotyledons elliptic, about 4-5 mm long. First leaf pinnate, second leaf bipinnate. By the third or fourth leaf stage: leaves bipinnate, petiole expanded and flattened. At the tenth leaf stage: leaves phyllodineous, linear, glabrous, usually two main veins run from the base to the apex; a gland present on the margin of the leaf blade adjacent to the petiole; stipules very small, visible only with a lens. Seed germination time 9 to 20 days.